src/modules/m_override.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev.
   6  *                       E-mail:
   7  *                <brain@chatspike.net>
   8  *                <Craig@chatspike.net>
   9  *
  10  * Written by Craig Edwards, Craig McLure, and others.
  11  * This program is free but copyrighted software; see
  12  *            the file COPYING for details.
  13  *
  14  * ---------------------------------------------------
  15  */
  16
  17 #include "users.h"
  18 #include "channels.h"
  19 #include "modules.h"
  20 #include "helperfuncs.h"
  21 #include "configreader.h"
  22 #include "inspircd.h"
  23
  24 /* $ModDesc: Provides support for unreal-style oper-override */
  25
  26 extern InspIRCd* ServerInstance;
  27
  28 typedef std::map<std::string,std::string> override_t;
  29
  30 class ModuleOverride : public Module
  31 {
  32         Server *Srv;
  33         override_t overrides;
  34         bool NoisyOverride;
  35  public:
  36
  37         ModuleOverride(InspIRCd* Me)
  38                 : Module::Module(Me)
  39         {
  40
  41                 // here we initialise our module. Use new to create new instances of the required
  42                 // classes.
  43
  44
  45
  46                 // read our config options (main config file)
  47                 OnRehash("");
  48         }
  49
  50         virtual void OnRehash(const std::string &parameter)
  51         {
  52                 // on a rehash we delete our classes for good measure and create them again.
  53                 ConfigReader* Conf = new ConfigReader;
  54
  55                 // re-read our config options on a rehash
  56                 NoisyOverride = Conf->ReadFlag("override","noisy",0);
  57                 overrides.clear();
  58                 for (int j =0; j < Conf->Enumerate("type"); j++)
  59                 {
  60                         std::string typen = Conf->ReadValue("type","name",j);
  61                         std::string tokenlist = Conf->ReadValue("type","override",j);
  62                         overrides[typen] = tokenlist;
  63                 }
  64
  65                 DELETE(Conf);
  66         }
  67
  68         void Implements(char* List)
  69         {
  70                 List[I_OnRehash] = List[I_OnAccessCheck] = List[I_On005Numeric] = List[I_OnUserPreJoin] = List[I_OnUserPreKick] = 1;
  71         }
  72
  73         virtual void On005Numeric(std::string &output)
  74         {
  75                 output.append(" OVERRIDE");
  76         }
  77
  78         virtual bool CanOverride(userrec* source, char* token)
  79         {
  80                 // checks to see if the oper's type has <type:override>
  81                 override_t::iterator j = overrides.find(source->oper);
  82
  83                 if (j != overrides.end())
  84                 {
  85                         // its defined, return its value as a boolean for if the token is set
  86                         return (j->second.find(token, 0) != std::string::npos);
  87                 }
  88
  89                 // its not defined at all, count as false
  90                 return false;
  91         }
  92
  93         virtual int OnUserPreKick(userrec* source, userrec* user, chanrec* chan, const std::string &reason)
  94         {
  95                 if ((*source->oper) && (CanOverride(source,"KICK")))
  96                 {
  97                         if (((chan->GetStatus(source) == STATUS_HOP) && (chan->GetStatus(user) == STATUS_OP)) || (chan->GetStatus(source) < STATUS_VOICE))
  98                         {
  99                                 ServerInstance->WriteOpers("*** NOTICE: "+std::string(source->nick)+" Override-Kicked "+std::string(user->nick)+" on "+std::string(chan->name)+" ("+reason+")");
 100                         }
 101                         /* Returning -1 explicitly allows the kick */
 102                         return -1;
 103                 }
 104                 return 0;
 105         }
 106
 107         virtual int OnAccessCheck(userrec* source,userrec* dest,chanrec* channel,int access_type)
 108         {
 109                 if (*source->oper)
 110                 {
 111                         if ((Srv) && (source) && (channel))
 112                         {
 113                                 // Fix by brain - allow the change if they arent on channel - rely on boolean short-circuit
 114                                 // to not check the other items in the statement if they arent on the channel
 115                                 int mode = channel->GetStatus(source);
 116                                 if ((!channel->HasUser(source)) || ((mode != STATUS_HOP) && (mode != STATUS_OP)))
 117                                 {
 118                                         switch (access_type)
 119                                         {
 120                                                 case AC_DEOP:
 121                                                         if (CanOverride(source,"MODEDEOP"))
 122                                                         {
 123                                                                 ServerInstance->WriteOpers("*** NOTICE: "+std::string(source->nick)+" Override-Deopped "+std::string(dest->nick)+" on "+std::string(channel->name));
 124                                                                 return ACR_ALLOW;
 125                                                         }
 126                                                         else
 127                                                         {
 128                                                                 return ACR_DEFAULT;
 129                                                         }
 130
 131                                                 case AC_OP:
 132                                                         if (CanOverride(source,"MODEOP"))
 133                                                         {
 134                                                                 ServerInstance->WriteOpers("*** NOTICE: "+std::string(source->nick)+" Override-Opped "+std::string(dest->nick)+" on "+std::string(channel->name));
 135                                                                 return ACR_ALLOW;
 136                                                         }
 137                                                         else
 138                                                         {
 139                                                                 return ACR_DEFAULT;
 140                                                         }
 141
 142                                                 case AC_VOICE:
 143                                                         if (CanOverride(source,"MODEVOICE"))
 144                                                         {
 145                                                                 ServerInstance->WriteOpers("*** NOTICE: "+std::string(source->nick)+" Override-Voiced "+std::string(dest->nick)+" on "+std::string(channel->name));
 146                                                                 return ACR_ALLOW;
 147                                                         }
 148                                                         else
 149                                                         {
 150                                                                 return ACR_DEFAULT;
 151                                                         }
 152
 153                                                 case AC_DEVOICE:
 154                                                         if (CanOverride(source,"MODEDEVOICE"))
 155                                                         {
 156                                                                 ServerInstance->WriteOpers("*** NOTICE: "+std::string(source->nick)+" Override-Devoiced "+std::string(dest->nick)+" on "+std::string(channel->name));
 157                                                                 return ACR_ALLOW;
 158                                                         }
 159                                                         else
 160                                                         {
 161                                                                 return ACR_DEFAULT;
 162                                                         }
 163
 164                                                 case AC_HALFOP:
 165                                                         if (CanOverride(source,"MODEHALFOP"))
 166                                                         {
 167                                                                 ServerInstance->WriteOpers("*** NOTICE: "+std::string(source->nick)+" Override-Halfopped "+std::string(dest->nick)+" on "+std::string(channel->name));
 168                                                                 return ACR_ALLOW;
 169                                                         }
 170                                                         else
 171                                                         {
 172                                                                 return ACR_DEFAULT;
 173                                                         }
 174
 175                                                 case AC_DEHALFOP:
 176                                                         if (CanOverride(source,"MODEDEHALFOP"))
 177                                                         {
 178                                                                 ServerInstance->WriteOpers("*** NOTICE: "+std::string(source->nick)+" Override-Dehalfopped "+std::string(dest->nick)+" on "+std::string(channel->name));
 179                                                                 return ACR_ALLOW;
 180                                                         }
 181                                                         else
 182                                                         {
 183                                                                 return ACR_DEFAULT;
 184                                                         }
 185                                         }
 186                                 }
 187                         }
 188
 189                         if (CanOverride(source,"OTHERMODE"))
 190                         {
 191                                 return ACR_ALLOW;
 192                         }
 193                         else
 194                         {
 195                                 return ACR_DEFAULT;
 196                         }
 197                 }
 198
 199                 return ACR_DEFAULT;
 200         }
 201
 202         virtual int OnUserPreJoin(userrec* user, chanrec* chan, const char* cname)
 203         {
 204                 if (*user->oper)
 205                 {
 206                         if (chan)
 207                         {
 208                                 if ((chan->modes[CM_INVITEONLY]) && (CanOverride(user,"INVITE")))
 209                                 {
 210                                         if (NoisyOverride)
 211                                         {
 212                                                 irc::string x = chan->name;
 213                                                 if (!user->IsInvited(x))
 214                                                 {
 215                                                         /* XXX - Ugly cast for a parameter that isn't used? :< - Om */
 216                                                         chan->WriteChannelWithServ(ServerInstance->Config->ServerName, "NOTICE %s :%s invited himself into the channel", cname, user->nick);
 217                                                 }
 218                                         }
 219                                         ServerInstance->WriteOpers("*** "+std::string(user->nick)+" used operoverride to bypass +i on "+std::string(cname));
 220                                         return -1;
 221                                 }
 222
 223                                 if ((chan->key[0]) && (CanOverride(user,"KEY")))
 224                                 {
 225                                         if (NoisyOverride)
 226                                                 chan->WriteChannelWithServ(ServerInstance->Config->ServerName, "NOTICE %s :%s bypassed the channel key", cname, user->nick);
 227                                         ServerInstance->WriteOpers("*** "+std::string(user->nick)+" used operoverride to bypass +k on "+std::string(cname));
 228                                         return -1;
 229                                 }
 230
 231                                 if ((chan->limit > 0) && (chan->GetUserCounter() >=  chan->limit) && (CanOverride(user,"LIMIT")))
 232                                 {
 233                                         if (NoisyOverride)
 234                                                 chan->WriteChannelWithServ(ServerInstance->Config->ServerName, "NOTICE %s :%s passed through your channel limit", cname, user->nick);
 235                                         ServerInstance->WriteOpers("*** "+std::string(user->nick)+" used operoverride to bypass +l on "+std::string(cname));
 236                                         return -1;
 237                                 }
 238
 239                                 if (CanOverride(user,"BANWALK"))
 240                                 {
 241                                         // other join
 242                                         return -1;
 243                                 }
 244                         }
 245                 }
 246                 return 0;
 247         }
 248
 249         virtual ~ModuleOverride()
 250         {
 251         }
 252
 253         virtual Version GetVersion()
 254         {
 255                 return Version(1,0,0,1,VF_VENDOR);
 256         }
 257 };
 258
 259
 260 class ModuleOverrideFactory : public ModuleFactory
 261 {
 262  public:
 263         ModuleOverrideFactory()
 264         {
 265         }
 266
 267         ~ModuleOverrideFactory()
 268         {
 269         }
 270
 271         virtual Module * CreateModule(InspIRCd* Me)
 272         {
 273                 return new ModuleOverride(Me);
 274         }
 275
 276 };
 277
 278
 279 extern "C" void * init_module( void )
 280 {
 281         return new ModuleOverrideFactory;
 282 }